mi13 сache

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Mi13 Cache is a simple and effective plugin for caching WordPress pages. It saves HTML pages as files and serves them on subsequent requests, significantly speeding up site loading.

Key features:

• Line-by-line caching of HTML pages.
• Flexible settings: select which page types to cache.
• Automatic cache clearing when content is updated.
• Cache status displayed as an HTML comment at the beginning of the file.
• Cache statistics: file size and number of files.
• Security: access permission checks and filtering of system pages.
• Compatibility with custom post types.

Usage

After activation:

Go to Settings → Mi13 Cache.

Configure the settings:

    Select page types to cache (home page, posts, pages, categories, archives, custom types).

    Set the cache lifetime (in seconds; default is 86 400 s / 24 hours).

    Clear the cache manually using the Clear Cache button (if needed).

Save the settings.

You can check the cache status in the page source code:

Open the page source code (press Ctrl+U or right-click → “View Page Source”).

Look for a comment at the very beginning of the HTML file, like this: <!-- MI13 CACHE --><h3>Settings</h3>
Page types — select which content types to cache.

Cache lifetime — the interval in seconds after which the cache expires.

Clear cache — a button to manually clear all cached files.<h3>HTML comment format</h3>

The plugin adds an HTML comment with information to the beginning of each cached file:

Limitations

Caching does not apply to:

authenticated users;

the admin panel;

404 pages;

search pages (?s=...);

RSS feeds (/feed/);

AJAX requests;

POST requests;

URLs with GET parameters (except paged for pagination).<h3>Troubleshooting</h3>

Issue: the cache is not created.
Solution: make sure that:

define('WP_CACHE', true) is present in wp-config.php;
WordPress has write permissions for /wp-content/cache/mi13-cache/.

Issue: pages do not update after editing.
Solution: manually clear the cache on the settings page.

Issue: access permission error when clearing the cache.
Solution: check file permissions in the cache directory.

Security

Permission check (manage_options) before clearing the cache.

Caching disabled for authenticated users.

Exclusion of system pages (404, search, feed, etc.).

Use of the secure WordPress API for file system operations.<h3>Directory structure</h3>
Cached files are saved in: /wp-content/cache/mi13-cache/

Each file has the .html extension and a name corresponding to the page URL.